import Vue from 'vue'
import VueRouter from 'vue-router'
import Reg from '@/views/Reg/Reg.vue'
import Login from '@/views/Login/Login.vue'
import Main from '@/views/Main/Main.vue'
import store from '@/store'
import Home from '@/views/Menus/Home/Home.vue'
import UserInfo from '@/views/Menus/User/UserInfo.vue'
import UserAvatar from '@/views/Menus/User/UserAvatar.vue'
import UserPwd from '@/views/Menus/User/UserPwd.vue'
import ArtCate from '@/views/Menus/Article/ArtCate.vue'
import ArtList from '@/views/Menus/Article/ArtList.vue'

Vue.use(VueRouter)

// 把下面的代码粘贴到路由模块中对应的位置，即可防止路由报错的问题
const originalPush = VueRouter.prototype.push
VueRouter.prototype.push = function push(location) {
  return originalPush.call(this, location).catch((err) => err)
}

// 路由规则数组
const routes = [
  {
    path: '/reg',
    component: Reg
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/',
    component: Main,
    // 路由重定向, 写完整路径
    redirect: '/home',
    children: [
      {
        path: 'home',
        component: Home
      },
      {
        path: 'user-info',
        component: UserInfo
      },
      {
        path: 'user-avatar',
        component: UserAvatar
      },
      {
        path: 'user-pwd',
        component: UserPwd
      },
      {
        path: 'art-cate',
        component: ArtCate
      },
      {
        path: 'art-list',
        component: ArtList
      }
    ]
  }
]

const router = new VueRouter({
  routes
})

/*
注册全局前置守卫: 每次路由跳转前拦截决定是否放行,一旦注册必须要调用 next()
传入一个回调函数
回调函数有 3 个参数
参数1: to 到哪里去
参数2: from 从哪里来
参数3: next 是否放行
*/
router.beforeEach((to, from, next) => {
  /*
  需求: 如果没有 token 不允许进入除了登录注册以外的所有页面
  1. 没有 token
  2.进入的页面不是登录与注册
  错误逻辑 : if (!store.state.user.token && to.path !== '/login' || to.path !== '/reg')
  || 的特点是左右任意一个是 true 结果都是 true 不管访问的是 /home 还是 /login 得到的结果都是 true
  */
  // console.log(store.state.user.token)
  if (!store.state.user.token && to.path !== '/login' && to.path !== '/reg') {
    Vue.prototype.$message.error('您还未登录')
    return next('/login')
  }
  next()
})
export default router
